WO1990004728A1 - Chaîne a rouleaux - Google Patents

Chaîne a rouleaux Download PDF

Info

Publication number
WO1990004728A1
WO1990004728A1 PCT/DE1989/000693 DE8900693W WO9004728A1 WO 1990004728 A1 WO1990004728 A1 WO 1990004728A1 DE 8900693 W DE8900693 W DE 8900693W WO 9004728 A1 WO9004728 A1 WO 9004728A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
plates
chain
surface segments
bearing collars
Prior art date
Application number
PCT/DE1989/000693
Other languages
German (de)
English (en)
Inventor
Bernhard Rohloff
Original Assignee
Bernhard Rohloff
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bernhard Rohloff filed Critical Bernhard Rohloff
Priority to AT89912394T priority Critical patent/ATE84858T1/de
Priority to DE8989912394T priority patent/DE58903361D1/de
Priority to JP51148489A priority patent/JPH04502198A/ja
Publication of WO1990004728A1 publication Critical patent/WO1990004728A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links

Definitions

  • FIG. 4 shows the joints of FIG. 3 in a section along the line IV-IV of FIG. 3;
  • Fig. 5 shows a chain link in section A-B of Fig. 6;
  • the roller chain contains, as usual, a large number of inner and outer links which are arranged alternately one behind the other in the direction of the longitudinal axis _A of the roller chain.
  • Each inner link consists of at least two plate-shaped inner plates 1 which are aligned with one another and are arranged symmetrically on both sides of the axis A_ and which are provided on their mutually facing sides with mutually aligned, longitudinally spaced, tubular bearing collars 3 which have continuous inner holes 6 in the Form inner flaps 1.
  • Each outer link consists of at least two plate-shaped outer plates 2, which are arranged symmetrically on both sides of the axis A and which have bolt holes 10 which are aligned with one another and are spaced apart in the longitudinal direction for receiving one bolt 4 each.
  • one end of an inner link lies between the assigned ends of the two outer link plates 2 of an adjacent outer link.
  • the connection of the outer and inner links is carried out by a bolt 4, which extends through the inner holes 6 of the opposite bearing collar 3 and the bolt holes 10 of the adjacent outer member and is riveted to the outer plates 2, for example.
  • loosely rotatably mounted rollers 5 are mounted on the bearing collar 3 and hold the inner plates 1 at a distance which is smaller than the distance between two outer plates 2.
  • outer link plates 2 are preferably - seen in the longitudinal direction of the chain - on their edges 7a and 7b located above and below the axis_A and above and below the bolt holes 10, as shown in particular in FIGS. 1, 2 and 5, with punctiform, in Provide projecting stop lugs 7c in the direction of the center plane of the chain.
  • the division t of the rollers 5, i.e. the distance between their central axes when the chain is stretched is kept constant in that the distance between the axes of the bolts 4 or the bolt holes 10 of the outer link plates 2 receiving them is reduced by a dimension 2a, for the distance of the center axes 3m of the outer contours the bearing collar 3 and the center axes 6m of the inner holes 6, however, the value t is maintained.
  • the dimension 2a corresponds to the double dimension_a_ by which each pin axis 4m with the chain stretched is shifted outwards from the center axis 6m of the inner holes 6 and the center axes 3m of the outer contours of the bearing collars 3.
  • the distance between the bolt axes 4m in the outer links is therefore structurally fixed at t-2a.
  • the distance between the pin axes 4m with the chain stretched, measured in the inner links is t + 2a.
  • the distance between the center axes 6m of all the rollers 5, on the other hand, is t_, so that the correction of the bolt spacing in the outer plates 2 to the value t - 2a results in a constant division t for the rollers 6.
  • Such a correction to keep the roller pitch constant is not necessary if, according to another embodiment of the invention (FIG.
  • the inner holes 6 are shifted by the dimension _a towards the center of the inner plates 1 and are thus arranged asymmetrically in the bearing collar 3, so that at straight chain the center axes 4m of the bolts 4 and the center axes 3m of the outer contours of the bearing collars 3 coincide.
  • the division of roles then again corresponds to dimension t,.
  • the inner hole 6 shows the oval or elongated cross section of the inner hole located in the bearing collar 3.
  • the inner hole 6 is preferably designed so that it encompasses the bolt 4 in the load direction by approximately 110 degrees to 140 degrees in order to thereby obtain low surface pressure-sn.
  • a value of 120 degrees has proven to be the best value so far because it represents a good compromise between a low surface pressure and the desired small but noticeable rotatability of the bolts 4 about the longitudinal axis A of the chain.
  • FIG. 8 shows an embodiment in which, in contrast to FIGS. 1 to 6, the outer bearing surface, each bearing a roller 5, is formed from four equally large cylinder surface segments 3b, 3c, 3d and 3e, each extending over 90 degrees, which in cross section perpendicular to the center axes 3m result in a surface whose outer contour corresponds to that of a square, the side lines of which are not straight but convex to the outside, whose center lies on the center axis 3m and whose envelope circle touching the four corners has a radius that is somewhat smaller, preferred ⁇ is about 0.1 mm smaller than the radius of the convex side lines.
  • the central axes of the cylinder surface segments 3b to 3e therefore intersect a circle with a radius of approximately 0.1 mm.
  • Fig. 8 shows the chain engagement with a chain wheel 8 driven by the chain. It can be seen that due to the special shape of the bearing collar 3, the rollers 5 from the cylinder surface segments 3b, which run in the chain running direction (arrow), that is to the front and to the chain wheel 8 are directed to be held positively over a quarter of the circumference of the bearing collar. ' This results in connection with the positive Au position of the bolts 4 on the front or rear inner bearing surfaces of the bearing collars 3 in the running direction of the chain, a substantial reduction in the elastic deformation of the joint components, which reduces the wear on the tooth flanks of the sprocket 8 Consequence.
  • FIGS. 9 and 10 finally show the embodiment currently considered the best, in which, in contrast to FIG. 8, the outer bearing surfaces of the bearing collars 3 are composed of three equally large cylinder surface segments 3f, 3g and 3h, each extending over 120 degrees.
  • the cylindrical surface segments 3f to 3h result in a surface perpendicular to the central axes 3m, the outer contour of which corresponds approximately to that of an equilateral triangle, the side lines of which are not straight, 90/04728
  • the envelope circle touching the three corners has a radius that is somewhat smaller, preferably about 0.1 mm smaller than the radius of the convex side lines.
  • the axes of the three cylinder smile duck 3f to 3h therefore intersect a circle with a radius of approx. 0.1 mm.
  • the radius of the convex side lines is preferably exactly the same as the radius of the inner holes of the rollers 5, so that each cylinder surface segment can positively contact the inner contour of the rollers 5, which results in a low surface pressure. Further details emerge from FIGS. 9 and 10, to which express reference is hereby made.
  • the division of the outer members is, as in the exemplary embodiments according to FIGS. 1 to 6 and 8, preferably t-2a.
  • FIG. 9 again shows the chain engagement with the sprocket 8 driven by the chain in the direction of the arrow. It can be seen that the leading roller 5a of the inner link 1 is positively held by the cylinder surface segment 3g over a third of the circumference of the bearing collar which is directed forward in Chain running direction and the sprocket 8 is directed, while the trailing roller 5b is also positively supported by the cylinder surface segment 3f directed towards the center of the inner plate 1 and symmetrical to the axis_A_, also over a third of the bearing collar.
  • the leading roller 5a When engaging with a sprocket rotating in the direction of the arrow, but driving the chain, the leading roller 5a would be held by the cylinder surface segment 3f directed towards the center of the inner plate 1 and lying symmetrically to the axis A, while the trailing roller 5b would rest against the rear and would find downward facing cylinder surface segment 3g.
  • the inner holes 6 are likewise formed from three cylinder surface segments 6a (FIG. 10) of equal size, which extend over somewhat less than 120 degrees each, which are each connected by short flat or slightly convex surface sections 6b.
  • the radius of the circular arc sections is preferably exactly as large as the bolt radius, so that each cylinder surface segment 6a can positively contact the bolts 4, as a result of which a low surface pressure is achieved.
  • the cross-sectional area described is not completely inside, but partly outside the envelope circle.
  • the inner holes 6 are arranged in the bearing collar 3 in such a way that a circular arc section 6a is always directed exactly to the adjacent outer member 2a (FIG. 10) and is exactly halved by the axis A or central plane, so that the bolts 4 in the chain running direction are over a third of the bolt circumference are held in a form-fitting manner.
  • the axis _A runs exactly through the middle 'of that flat section 6b which connects the other two cylinder surface segments 6a, as can be seen particularly clearly from FIG. 10.
  • the rotatability of the chain links about the longitudinal axis of the chain is in this embodiment only the arched or angled Edges 7a and 7b of the outer plates 2 (FIGS. 2 and 5) are limited.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

Dans une chaîne à rouleaux pour bicyclettes à dérailleur, les axes (4) sont retenus dans des trous intérieurs (6) ovales ou oblongs situés à l'intérieur des collets de douilles (3) montés sur les mailles intérieures (1). Les surfaces extérieures des collets de douilles, qui portent les rouleaux, peuvent être constituées de segments de surface cylindrique (3f, 3g, 3h) à raison de quatre de 90° ou de trois de 120°. La couche médiane des mailles intérieures (1) est maintenue en position par les bords bombés ou coudés des mailles extérieures. Le montage par liaison de forme des axes (4) dans les collets de douilles (3) ainsi que le montage par liaison de forme des rouleaux (5) sur les segments de surface cylindrique assurent une faible pression en pivot et une grande souplesse latérale avec toutefois une résistance élevée à la torsion, ce qui est particulièrement apprécié dans des chaînes pour cycles de course.
PCT/DE1989/000693 1988-10-28 1989-10-27 Chaîne a rouleaux WO1990004728A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT89912394T ATE84858T1 (de) 1988-10-28 1989-10-27 Rollenkette.
DE8989912394T DE58903361D1 (de) 1988-10-28 1989-10-27 Rollenkette.
JP51148489A JPH04502198A (ja) 1989-10-27 1989-10-27 ローラチェーン

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3836738 1988-10-28
DEP3836738.6 1988-10-28
DEP3842140.2 1988-12-15
DE3842140A DE3842140A1 (de) 1988-10-28 1988-12-15 Rollenkette

Publications (1)

Publication Number Publication Date
WO1990004728A1 true WO1990004728A1 (fr) 1990-05-03

Family

ID=25873699

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000693 WO1990004728A1 (fr) 1988-10-28 1989-10-27 Chaîne a rouleaux

Country Status (4)

Country Link
US (1) US5140806A (fr)
EP (1) EP0396701B1 (fr)
DE (2) DE3842140A1 (fr)
WO (1) WO1990004728A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666434A1 (fr) * 1994-02-07 1995-08-09 Sachs Industries S.A. (Huret Et Maillard Reunis) Chaîne de transmission perfectionnée, notamment pour cycle

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6761657B2 (en) * 1996-12-19 2004-07-13 Cloyes Gear And Products, Inc. Roller chain sprocket with added chordal pitch reduction
DE19704827A1 (de) * 1997-02-08 1998-08-13 Dornier Gmbh Lindauer Rollenkettenglied und Transportkette mit Rollenkettengliedern
DE19904954B4 (de) * 1999-02-06 2015-05-13 Sram Deutschland Gmbh Antriebskette, insbesondere für Fahrräder
DE59908025D1 (de) * 1999-07-14 2004-01-22 Winklhofer & Soehne Gmbh Laschenketten mit verschleissarmen Kettengelenken
EP1237804B1 (fr) 1999-11-26 2004-03-03 Gram Equipment A/S Maillon de chaine transporteuse pourvu d'un dispositif de drainage
EP1550819B1 (fr) * 2004-01-05 2013-08-28 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Chaîne à amortissement de bruit
JP2006009947A (ja) * 2004-06-25 2006-01-12 Tsubakimoto Chain Co ローラチェーン
DE102008008807B3 (de) * 2008-02-12 2009-07-09 Thiele Gmbh & Co. Kg Förderkette
EP2146033B1 (fr) * 2008-07-18 2017-04-26 WindowMaster International A/S Chaîne push-pull et actionneur
DE202011003057U1 (de) 2011-02-22 2012-05-31 Ludwig Heller Hülsenlose Schaltungskette für Fahrräder
DE102012009782A1 (de) 2012-05-18 2013-11-21 Ludwig Heller Hülsenlose Schaltungskette für Fahrräder
CN105333062A (zh) * 2014-08-06 2016-02-17 许炎章 一种滚子链
US10352397B2 (en) * 2017-03-01 2019-07-16 Shimano Inc. Bicycle chain
US10760647B2 (en) * 2018-06-01 2020-09-01 TH Industries Co., LTD Drive chain for bicycle
DE102021116279A1 (de) 2021-06-23 2022-12-29 Shimano Inc. Innengliedplatte für eine Kette eines vom Menschen angetriebenen Fahrzeugs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568649A (en) * 1947-12-24 1951-09-18 Smith Mitchell Chain structure
DE2829424B2 (de) * 1977-07-06 1981-03-26 Compagnie des Transmissions Mécaniques SEDIS, Levallois-Perret Rollenkette
DE3434516A1 (de) * 1984-08-09 1986-02-20 Bernhard 3500 Kassel Rohloff Bolzenlagergelenk fuer rollenketten, die in kettentrieben verwendet werden
EP0233640A2 (fr) * 1986-02-19 1987-08-26 ROHLOFF, Bernhard Chaîne à rouleaux pour entraînements à chaînes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1945357A (en) * 1931-05-16 1934-01-30 Link Belt Co Chain
US2113980A (en) * 1936-07-01 1938-04-12 Jeffrey Mfg Co Chain
US2142003A (en) * 1936-12-03 1938-12-27 Morgelin Konrad Conveyer chain
US4704099A (en) * 1984-08-09 1987-11-03 Bernhard Rohloff Roller chain for chain drives

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568649A (en) * 1947-12-24 1951-09-18 Smith Mitchell Chain structure
DE2829424B2 (de) * 1977-07-06 1981-03-26 Compagnie des Transmissions Mécaniques SEDIS, Levallois-Perret Rollenkette
DE3434516A1 (de) * 1984-08-09 1986-02-20 Bernhard 3500 Kassel Rohloff Bolzenlagergelenk fuer rollenketten, die in kettentrieben verwendet werden
EP0233640A2 (fr) * 1986-02-19 1987-08-26 ROHLOFF, Bernhard Chaîne à rouleaux pour entraînements à chaînes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666434A1 (fr) * 1994-02-07 1995-08-09 Sachs Industries S.A. (Huret Et Maillard Reunis) Chaîne de transmission perfectionnée, notamment pour cycle
FR2715981A1 (fr) * 1994-02-07 1995-08-11 Sachs Ind Sa Chaîne de transmission perfectionnée, notamment pour cycle.

Also Published As

Publication number Publication date
EP0396701A1 (fr) 1990-11-14
DE58903361D1 (de) 1993-03-04
DE3842140A1 (de) 1990-05-03
EP0396701B1 (fr) 1993-01-20
US5140806A (en) 1992-08-25

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